Display screen with an icon



FIG. 1 is a front view of a display screen with icon showing our new design;

FIG. 2 is a front view of a second embodiment of a display screen with icon;

FIG. 3 is a front view of a third embodiment of a display screen with icon; and,

FIG. 4 is a front view of a fourth embodiment of a display screen with icon.

The broken lines and shading in all views illustrate portions of the icon and form no part of the claimed design. 

CLAIM The ornamental design for a display screen with an icon, as shown and described. 